A5037055623- Physics and Engineering Research Articles
- Enzyme Structure and Function
- Molecular Spectroscopy and Structure
- Molecular spectroscopy and chirality
- Spectroscopy and Laser Applications
- Spectroscopy and Quantum Chemical Studies
- Protein Structure and Dynamics
- Quantum Mechanics and Applications
- Chemical Thermodynamics and Molecular Structure
- Advanced Chemical Physics Studies
- Quantum Information and Cryptography
- Engineering and Materials Science Studies
- Various Chemistry Research Topics
- Atmospheric Ozone and Climate
- Advanced NMR Techniques and Applications
- X-ray Diffraction in Crystallography
- Solid-state spectroscopy and crystallography
- Porphyrin and Phthalocyanine Chemistry
- Crystallization and Solubility Studies
- Photochemistry and Electron Transfer Studies
- Quantum Computing Algorithms and Architecture
- Flexible and Reconfigurable Manufacturing Systems
- Advanced X-ray Imaging Techniques
- NMR spectroscopy and applications
- Inorganic and Organometallic Chemistry
Brookhaven National Laboratory
1998-2025
Fresh Pond Research Institute
2025
München Klinik
2015-2024
Ronin Institute
2017-2024
Hampshire College
2003-2021
Munich University of Applied Sciences
2021
Mount Sinai Hospital
2020
Stony Brook University
2020
Lawrence Berkeley National Laboratory
2020
Rochester Institute of Technology
2015-2019
If two separated observers are supplied with entanglement, in the form of n pairs particles identical partly entangled pure states, one member each pair being given to observer, they can, by local actions concentrate this entanglement into a smaller number maximally particles, for example, Einstein-Podolsky-Rosen singlets, similarly shared between observers. The concentration process asymptotically conserves entropy entanglement---the von Neumann partial density matrix seen either...
An algorithmic proof that any discrete finite-dimensional unitary operator can be constructed in the laboratory using optical devices is given. Our recursive algorithm factorizes N\ifmmode\times\else\texttimes\fi{}N matrix into a sequence of two-dimensional beam splitter transformations. The experiment built from corresponding devices. This also permits measurement observable to Hermitian matrix. Thus experiments with type radiation (photons, atoms, etc.) exploring higher-dimensional quantum...
The infrared spectra of the formate, acetate, and oxalate ions have been obtained for both solid aqueous solution. Raman these with depolarization ratios in Vibrational assignments made which differ slightly acetate ion more markedly from earlier work. confirm Fonteyne’s assignment formate ion.
We have formulated the statistical mechanics in terms of $S$ matrix, which describes scattering processes taking place thermodynamical system interest. Such a formulation is necessary for studying systems whose microscopic constituents behave according to laws relativistic quantum mechanics. Our result simple prescription calculating grand canonical potential any gaseous given free-particle energies and $S$-matrix elements. When applied nonrelativistic gas, it gives all virial coefficients....
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConfigurational Effects on the Proton Magnetic Resonance Spectra of Six-membered Ring Compounds1R. U. Lemieux, R. K. Kullnig, H. J. Bernstein, and W. G. SchneiderCite this: Am. Chem. Soc. 1958, 80, 22, 6098–6105Publication Date (Print):November 1, 1958Publication History Published online1 May 2002Published inissue 1 November 1958https://pubs.acs.org/doi/10.1021/ja01555a051https://doi.org/10.1021/ja01555a051research-articleACS PublicationsRequest...
In order to study the factors giving rise proton resonance chemical shifts of free molecules, as well association due hydrogen bonding, measurements were carried out for a variety simple hydride molecules in both liquid and gaseous states. It is found that state can be interpreted terms combined effect electronegativity magnetic anisotropy atom which bonded. The signals measured near melting point, correspond maximum association, show large lower field relative corresponding gas signals....
The position of the proton resonance signal a molecule in gas is found to depend upon pressure. Four distinct phenomena are considered contribute displacement which undergoes as density changed: (a) bulk susceptibility, (b) van der Waals interactions, (c) electric fields, and (d) neighbor-molecule magnetic anisotropy. Theoretical expressions presented for each these effects. Experiments were performed on CH4, C2H6, HCl pure gases mixtures with variety foreign gases. For at 30°C, chemical...
The various output frequencies of the argon ion laser at 5145, 5017, 4965, 4880, and 4765 Å lie in absorption bands heavier halogen gases. With appropriate choice exciting line, either resonance Raman effect or fluorescence can be observed. difference between two types spectra are discussed some detail. In case a strong effect, overtone sequences up to 14th harmonic could frequencies, depolarization ratios, relative scattering cross sections given for fundamentals overtones Cl2, Br2, I2,...
The spectrum of fluoroform has been investigated under high resolution (21-ft. grating) in the photographic infra-red with an absorbing path up to 60 meters, obtained by multiple reflection according method J. U. White. In addition, same length from 1.2 2.4μ was low a photoelectric spectrometer. A large number overtone and combination bands, 47 all, were found. Two parallel bands region well resolved analyzed, yielding, for moment inertia about axis perpendicular symmetry axis,...
The analyses of the ABX, A 2 X , and ABXY types spectra are discussed in detail under conditions for which observed give less than theoretical number transitions. These an spectrum is deceptively simple derived from general analyses, experimental examples such given.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman spectra and an assignment of the vibrational stretching region waterW. F. Murphy H. J. BernsteinCite this: Phys. Chem. 1972, 76, 8, 1147–1152Publication Date (Print):April 1, 1972Publication History Published online1 May 2002Published inissue 1 April 1972https://doi.org/10.1021/j100652a010RIGHTS & PERMISSIONSArticle Views1834Altmetric-Citations188LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full text article downloads...
The experimental observation of the resonance Raman effect in solutions with laser excitation is restricted by absorption sample. Due to thermal lens it not possible get a sharp focus highly absorbing media. Under ordinary circumstances one required compromise between and emission scattered light—that means discovering optimal solution concentrations suitable power or focusing conditions smallest degradation beam.
Carbon—carbon spin-coupling constants have been measured for a variety of types CC bonds (in C13-enriched compounds), usually characterized by the different hybridizations C atoms. For hydrocarbons in which these bond appear, constant is proportional to product s characters carbon atoms forming question. several substituted ``modified characters'' may be found, from can calculated means same proportionality factor found hydrocarbons. The enhancement due pi electrons seems pronounced double...
NeXus is an effort by international group of scientists to define a common data exchange and archival format for neutron, X-ray muon experiments. built on top the scientific HDF5 adds domain-specific rules organizing within files, in addition dictionary well defined field names. The has two purposes. First, it defines that can serve as container all relevant associated with beamline. This very important use case. Second, standards form application definitions between applications. provides...
The infrared spectra of toluene, toluene-α-d 3 , m-xylene, and m-xylene-αα′-d 6 have been obtained from 2 to 30 μ for the vapors liquids. Raman liquids also photoelectrically together with depolarization ratios. Vibrational assignments made four molecules consistent vapor band contours, polarization data, Teller Redlich ratio rule, a modified rule due Fitzer Scott.
The infrared spectra of pyridine and pyridine-4-d in the vapor state pyridine-2,6-d 2 pyridine-3,5-d liquid states have been obtained. Raman pyridine-4-d, , as liquids also obtained together with depolarization ratios. band contours for support assignment Corrsin, Fax, Lord most part preference to McCullough co-workers but it was found necessary reassign b frequencies give agreement between calculated observed thermodynamic functions. data on are reported a 1 modes consistent present...
A simple sample technique which makes it possible to record Raman spectra of highly absorbing solids is described. The main feature a rotating system containing pressed crystal powders, on the laser beam focused. relative motion between focus and surface avoids heating decomposition powder. With this is, for instance, obtain spectrum solid potassium permanganate, displaying progression strongly resonance enhanced overtones totally symmetric permanganate mode as well well-defined weakly other...
This paper deals with the analysis of nuclear magnetic resonance spectrum two pairs equivalent nuclei (of spin [Formula: see text])whose relative chemical shift is same order as spin-coupling constants system (A 2 B in notation Part I). The complete matrix set up and correlated results McConnell, McLean, Reilly (4) for corresponding theory large shiftsThe proton naphthalene reported analyzed an A on hypothesis that couplings between protons different rings are negligible. o-dichlorobenzene,...
This paper is concerned with the general problem of interpretation and analysis nuclear magnetic resonance spectra systems in which chemical shift spin-coupling constants are same order magnitude. Only nuclei spin 1/2 considered. Detailed methods developed for:(a) Two chemically non-equivalent species (written AB),(b) Three species, two equivalent AB 2 ),(c) (ABX), (AB) third (X) either a different or has signal well separated from A B.Proton S-guaiazulene, 2,6-lutidine, 2,3-lutidine...
Abstract Transmitting quantum information between two remote parties is a requirement for many applications; however, direct transmission of states often impossible because noise and loss in the communication channel. Entanglement-enhanced state can be used to avoid this issue, but current techniques require extensive experimental resources transmit large deterministically. To reduce these resource requirements, we use photon pairs hyperentangled polarization orbital angular momentum...